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The effect of repeated surface treatment of zirconia on its bond strength to resin cement.
Maciel, Lucas Campagnaro; Amaral, Marina; Queiroz, Daher Antonio; Baroudi, Kusai; Silva-Concílio, Laís Regiane.
Afiliação
  • Maciel LC; Postgraduate Program, School of Dentistry, University of Taubaté, Taubaté, Brazil.
  • Amaral M; Department of Dental Prosthesis, School of Dentistry, University of Taubaté, Taubaté, Brazil.
  • Queiroz DA; Division of Restorative and Prosthetic Dentistry, The Ohio State University College of Dentistry, Columbus, OH, USA.
  • Baroudi K; Postgraduate Program, School of Dentistry, University of Taubaté, Taubaté, Brazil.
  • Silva-Concílio LR; Department of Dental Prosthesis, School of Dentistry, University of Taubaté, Taubaté, Brazil.
J Adv Prosthodont ; 12(5): 291-298, 2020 Oct.
Article em En | MEDLINE | ID: mdl-33149850
PURPOSE: The aim of this study is to evaluate the influence of repeated surface treatments on wettability and surface roughness for zirconia surface and bond strength of zirconia-based ceramics to resin cement. MATERIALS AND METHODS: Seventy blocks (10 × 10 × 3 mm) of zirconia-based ceramics were fabricated and divided into two groups according to the surface treatments: (A) 110 µm Al2O3 airborne-particle abrasion and (R) 110 µm silica modified Al2O3 airborne-particle abrasion. At stage 2, each group was subdivided into 5 groups according to the surface retreatments: (a) 110 µm Al2O3 airborne-particle abrasion, (r) 110 µm silica modified Al2O3 airborne-particle abrasion, (D) diamond bur, (Da) diamond bur + 110 µm Al2O3 airborne-particle abrasion, and (Dr) diamond bur + 110 µm silica modified Al2O3 airborne-particle abrasion. Cylinders of self-adhesive resin cement were cemented onto each treated ceramic surface and subjected to micro-shear bond strength test. Additional specimens were prepared for roughness and wettability analyses. The data were subjected to t-test and One-way ANOVA followed by Tukey's post hoc test (α=.05). RESULTS: At stage 1, group R presented higher bond strength values than group A (P=.000). There was a statistically significant increase of bond strength at stage 2 for group A (P=.003). The diamond bur influenced the surface roughness, increasing the values (P=.023). Group R provided better wettability. Regardless of the applied surface treatment, most of failures were adhesive. CONCLUSION: The combination of application and reapplication of Rocatec Plus showed the best results of bond strength. Surface retreatment and recementation might be an indicated clinical strategy.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: J Adv Prosthodont Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Brasil País de publicação:
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: J Adv Prosthodont Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Brasil País de publicação: